Knife



FIG. 1 is a top plan view of a knife embodying the new design;

FIG. 2 is an elevational view of one side of the design;

FIG. 3 is an elevational view of the opposite side of the design;

FIG. 4 is a bottom plan view of the design;

FIG. 5 is a rear elevational view of the design; and,

FIG. 6 is a front elevational view of the design. 

The ornamental design for a knife, as shown. 